On Saturday I went to a computer conference at the University of Limerick.

For reasons never adequately explained Randall Munroe the creator of Xkcd was there. He did a talk, which was funny and afterwards gave most of the audience signed doodles. One of my friends made a cake with an Xkcd cartoon iced onto it. It was a small enough conference that all the attendees had a slice.

So, if you have a tiny nerd conference to organize try inviting someone famous, they may come. Hosting it on Valentines day may help.